CODEWITHSUNDEEP
rubysinatra
tonic
tonic

Reputation: 453

Conditional statement in "each...do" in Ruby?

In my erb file, I have the following code in the body tag:

<% @tasks.each do |task| %>  
  <%= task.name %>
<% end %>

This is working, but I only want to display task.name if task.otherAttribute does not equal -1.

For some reason, I can't figure out how to do this! Any tips much would be much appreciated.

Thank you in advance.

Upvotes: 0

Views: 2897

Answers (3)

d11wtq
d11wtq

Reputation: 35308

I tend to use #select and #reject for this idiom, since that's basically what you're doing.

<%= @tasks.reject{|t| t.other_attribute == -1}.each do |task| %>
  <%= task.name %>
<% end %>

These come from the Enumerable module, which most things with an #each method include.

Upvotes: 3

Anil
Anil

Reputation: 3919

Try this:

<% @tasks.each do |task| %>  
  <%= task.name if task.otherAttribute != 1 %>
<% end %>

Or:

<% @tasks.each do |task| %>  
  <%= task.name unless task.otherAttribute == 1 %>
<% end %>

I will provide some more options for future reference:

<% @tasks.each do |task| %>
  <% if task.otherAttribute != 1 %>
    <%= task.name %>
  <% end %>
<% end %>

<% @tasks.each do |task| %>  
  <%= task.otherAttribute == 1 ? '' : task.name %>
<% end %>

Good luck!

Upvotes: 3

Todd A. Jacobs
Todd A. Jacobs

Reputation: 84373

You can put conditionals into your ERB code.

<%= task.name if task.otherAttribute != 1 %>

You can also perform more complex tasks with a more verbose syntax. It's not necessary in your case, but you could also do more traditional if/else blocks like so:

<% if task.otherAttribute != 1 %>
  <%= task.name %>
<% end %>

Upvotes: 0

Related Questions